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# NOTES: Multiply Fractions - PowerPoint PPT Presentation

NOTES: Multiply Fractions. Steps: 1. Rewrite in fraction form – Turn mixed #’s & whole #’s into improper fractions! 2. Cross Simplify…if you can! 3. Multiply STRAIGHT Across! 4. Simplify…as always!!. DO NOT FIND COMMON DENOMINATORS!. EXAMPLES: Multiply Fractions. 1. 1. 2. 2. 3.

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NOTES: Multiply Fractions

• Steps:

• 1. Rewrite in fraction form – Turn mixed #’s & whole #’s into improper fractions!

• 2. Cross Simplify…if you can!

• 3. Multiply STRAIGHT Across!

• 4. Simplify…as always!!

DO NOT FIND

COMMON DENOMINATORS!

EXAMPLES: Multiply Fractions

1

1

2

2

3

EXAMPLES: Multiply Fractions

1

4

2

19

5

1

3

3

6

2

1

At the school dance, of the students wore the school colors.

of them were in the 7th grade. What fraction of the students at the school dance wore the school colors and were in the 7th grade?

A) B) C) D)

NOTES: Dividing Fractions

DO NOT Have to FIND

COMMON DENOMINATORS!

Rewrite in fraction form – Turn mixed #’s & whole #’s into improper fractions!

NOTES: Dividing Fractions

When Dividing Fractions

Don't be Shy

Flip the 2nd

And Multiply!

EXAMPLES: Dividing Fractions

1

2

1

3

1

EXAMPLES: Dividing Fractions

1

4

3

1

5

19

5

6

4

**If you want to find common denominators, you can. Your denominators will divide away, and you will divide the numerators straight across.

Once you have a common denominator, divide straight across.

3 ÷ 2 =

Multiplying and Dividing Fractions denominators will divide away, and you will divide the numerators straight across.

Rules that were used for multiplying and dividing integers also apply to fractions